1rtp: Difference between revisions

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<StructureSection load='1rtp' size='340' side='right'caption='[[1rtp]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='1rtp' size='340' side='right'caption='[[1rtp]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1rtp]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Black_rat Black rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RTP FirstGlance]. <br>
<table><tr><td colspan='2'>[[1rtp]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_rattus Rattus rattus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RTP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RTP FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1rtp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rtp OCA], [https://pdbe.org/1rtp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rtp RCSB], [https://www.ebi.ac.uk/pdbsum/1rtp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rtp ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1rtp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rtp OCA], [https://pdbe.org/1rtp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rtp RCSB], [https://www.ebi.ac.uk/pdbsum/1rtp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rtp ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/PRVA_RAT PRVA_RAT]] In muscle, parvalbumin is thought to be involved in relaxation after contraction. It binds two calcium ions.  
[https://www.uniprot.org/uniprot/PRVA_RAT PRVA_RAT] In muscle, parvalbumin is thought to be involved in relaxation after contraction. It binds two calcium ions.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1rtp ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1rtp ConSurf].
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<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We present here the X-ray crystal structure of the rat alpha-parvalbumin from fast twitch muscle. This protein (M(r) 11.8 kDa) crystallizes in space group P2(1)2(1)2(1) with unit cell dimensions of a = 34.3 A, b = 55.0 A, c = 156.1 A and three molecules in the asymmetric unit. The protein structure was solved by the molecular replacement method and has been refined to a crystallographic R-factor [formula: see text] of 0.181 for all reflections with I/sigma(I) &gt; or = 2 (I = intensity) between 8.0 and 2.0 A resolution. The molecules located most easily in the molecular replacement rotation function had lower overall thermal motion parameters and higher numbers of intermolecular crystal packing contacts. The overall fold of the polypeptide chain for the rat alpha-parvalbumin is similar to other known parvalbumin structures (root-mean-square deviations in alpha-carbon atom positions range from 0.60 to 0.87 A). There are two Ca(2+)-binding sites in parvalbumins, and there is some evidence for a third ion-binding site, adjacent to the CD site, in the rat species. The level of structural variability among the best-ordered regions of the three independent rat alpha-parvalbumin molecules in the crystallographic asymmetric unit is two to three times higher than the mean coordinate error (0.10 A), indicating flexibility in the molecule. Sequence differences between alpha and beta-lineage parvalbumins result in repacking of the hydrophobic core and some shifts in the protein backbone. The shifts are localized, however, and entire helices do not shift as rigid units.
Refined crystal structure of rat parvalbumin, a mammalian alpha-lineage parvalbumin, at 2.0 A resolution.,McPhalen CA, Sielecki AR, Santarsiero BD, James MN J Mol Biol. 1994 Jan 14;235(2):718-32. PMID:8289291<ref>PMID:8289291</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1rtp" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Parvalbumin|Parvalbumin]]
*[[Parvalbumin|Parvalbumin]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Black rat]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: James, M N.G]]
[[Category: Rattus rattus]]
[[Category: Mcphalen, C A]]
[[Category: James MNG]]
[[Category: Santarsiero, B D]]
[[Category: Mcphalen CA]]
[[Category: Sielecki, A R]]
[[Category: Santarsiero BD]]
[[Category: Calcium-binding protein]]
[[Category: Sielecki AR]]

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